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Top-Rated Tankless water heater installers in Monrovia - Updated Nov 2026

Markool Heating & Cooling, LLC
4.7(
18
)
Tankless Water Heater - Install

Serving Monrovia, MD and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"Markool was super professional, kind, and skillful. A few things really stood out. 1) He did a furnace flue piper install that he could have charged us much more for if he had wanted to take advantage of us - but he was honest and we paid less than we feared. He also went the extra mile helping my wife and I through a warranty claim with the furnace company so that we did not have to pay extra part costs. It was an unexpected need, but he was prepared with the part and worked with the manufacturer to get us covered. He was even able to better a previous repair. 2) On a home humidifier install, he made himself available on short notice, took time to answer our questions, and then showed us how to maintain the equipment ourselves so we wouldn't need to shelve out more for additional contracting work - even from him. Grateful!"
Response time1 day
15 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Benjamin Franklin Plumbing
Benjamin Franklin Plumbing
3.9(
107
)
Tankless Water Heater - Install

Serving Monrovia, MD and surrounding areas

Approved

In business since 1949

Free estimates

Credit card accepted

"Phone contact was very prompt. Service person arrived within 1 1/2 hours as promised. Problem was resolved and a new sump pump was installed. Time will tell if problem was totally solved. (need a rainy down pour to see. )"
Water Heater 1
Water Heater 2
Water Treatment
Fixed Leak 2
Leaking Under Sink 1

+12

Response time6 hrs
13 neighbors recently requested a quote
Recommended by58%of homeowners
Avatar for TriState Home Services
TriState Home Services
4.6(
204
)
Tankless Water Heater - Install

Serving Monrovia, MD and surrounding areas

In business since 1949

Free estimates

Emergency services offered

"I recently had a crack in my acrylic bathtub and called TriState Home Services to replace the tub. We decided to replace it with the same soaking tub to avoid any unnecessary damage to the ceramic tile we put in a few years ago. Bryan, the plumbing specialist at TriState did just that! He did an awesome job on this project. I also want to say how impressed I was with their customer service department, particularly with Megan, in her quick response to my emails along with making me feel so comfortable throughout the whole job."
Furnace Tune Up
Floor Heating System
Additional Photos
Additional Photos
Additional Photos

+2

Response time1 day
Recommended by91%of homeowners
Avatar for Excellent Plumbing
Excellent Plumbing
4.7(
179
)
Tankless Water Heater - Install

Serving Monrovia, MD and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Had an 18 year old water heater that needed to be replaced. Called on Tuesday, got an in person estimate on Wednesday, and a new unit installed on Friday. They walked me through the whole process at every step. Reasonable prices and great work."
Recommended by92%of homeowners
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